7 R0 [1 F' q4 m' YLONDON (Reuters) - Oil rose towards $70 on Wednesday as U.S. warships put on a show of force off Iran's coast, coinciding with a United Nations agency report that said the Islamic republic had expanded its nuclear programme. , r4 u8 v9 W: g: B3 p* c+ |+ A! v4 X: e4 L- x8 z& g
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